diff --git a/SoundslabInput.py b/SoundslabInput.py
index 98001eb..0fd4d64 100644
--- a/SoundslabInput.py
+++ b/SoundslabInput.py
@@ -60,6 +60,7 @@ def SW():
 
 def NW():
     # open menu
+    global show_menu
     print("toggling menu")
     if show_menu is True:
         show_menu = False